Aggressive seedhead of annual bluegrass allows exponential spread if left untreated in the fall. (Envu)
Month January Week 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 1 2 3 September October November December
Prioritized Options
Priority Explanation
PRE3 2 Specticle ® FLO 1 3 fl. oz./A + Tribute ® Total 1 oz./A + NIS 0.25% v/v + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai/gal.) 5 fl. oz./A)
PRE3 2 Specticle ® FLO 1 3 fl. oz./A + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai/gal.) 5 fl. oz./A)
• Most Consistent Control • Resistance Management • Control through April • Most Consistent Control • Resistance Management • Control through April including annual blue-eyed grass
1A
PRE3 2 Specticle ® FLO 1 6 fl. oz./A + Tribute ® Total 1 oz./A + NIS 0.25% v/v + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai/gal.) 5 fl. oz./A)
1B
• Control through April
2
Specticle FLO 2 9 fl. oz./A
Sand >85% or Soil Organic Matter <0.1%
• Most Consistent Control • Resistance Management • Control through April including annual blue-eyed grass
PRE3 2 Specticle ® FLO 1 3 fl. oz./A + Tribute ® Total 1 oz./A + NIS 0.25% v/v + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai/gal.) 5 fl. oz./A)
PRE3 2 Specticle ® FLO 1 3 fl. oz./A + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai/gal.) 5 fl. oz./A)
1
Specticle FLO 2 3 fl. oz./A Apply 30-45 days after previous application
Specticle FLO 2 3 fl. oz./A Apply 30-45 days after previous application
• Control through April
2
Specticle FLO 2 3 fl. oz./A
¹Read and follow all label directions especially with regards to applications around cool-season turf. Allow spray to dry prior to irrigation or rainfall.²Do not apply if turf injury is present and assess turf quality before each application. Do not apply during periods of excessive soil moisture.³In Florida, make application after first frost if a history of slight phytotoxicity from simazine.
Annual bluegrass can germinate over a wide range of temperatures, so a preemergence herbicide is needed for most effective control. (Envu)
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